(3) - Incoming

Geometry Level pending

Point D \text{D} is in isosceles △ ABC \triangle{\text{ABC}} at B \text{B} such that isosceles DAB ^ = 5 ∘ \widehat{\text{DAB}} = 5^\circ , ABD ^ = 2 5 ∘ \widehat{\text{ABD}} = 25^\circ , BDC ^ = 8 5 ∘ \widehat{\text{BDC}} = 85^\circ . What is the measurement of DCA ^ \widehat{\text{DCA}} in degrees?

85 15 25 45 65 35 55 75

Thành Đạt Lê by Thành Đạt Lê , 17, Singapore

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1 solution

Aaghaz Mahajan
Dec 10, 2018

Once again............Sine Rule kills it........!!

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